Fire-extinguisher apparatus



(No Model.)

W. K. PLATT.

FIRE BXTINGUISHER APPARATUS.

Patented Jan. 9, 1883.

A I A 9%/ IHIIIII Y Q [MASS FlG.3.

FIG.

WITNESSES:

Unire rares WILLIAM K. PLATT, OF PHILADELPHIA, PENNSYLVANIA.

FIRE-EXTINGUISHER APPARATUS.

SEECIFICATION forming part of-Letters Patent No. 270,332, daten January 9, lesa,

Application filed October 19, 1882. (No model.)

To ali whom it may concern Be it known that I, WILLIAM K. PLATT, of Philadelphia, Pennsylvania, have invented a new and useful Improvement; iu Fire-ExtinguishcrAppui-ritos; and I do hereby declare the following to be a full, clear, and exact description ot' the same, reference being had to the annexed drawings, making part hereof.

The nature of my invention will fully appear from the following specification and claims.

It has for its object the saving and protection ot the tine and more delicate working parts against injury and destruction from the fumes ot' the acid, and the acid itself", which is used in iirefextinguishing apparatus. ,If these parts are injured and corroded by the acid, the machine becomes useless.

In the drawings, Figure l is a vertical scctional view ot' that portion of my apparatus to which my improvement is applied. Figs. 2 and 3 are elevations of portable tire apparatus, showing my method of applying the straps to the outside thereof for carrying the same; Fig. 4, a horizontal sectional view on the line X X of Fig. l.

A, Figs. 2 and 3. is the outer casing of the apparatus. Figs. 1 and 4 represent the parts there shown iu about t'ull size.

B, Fig. l, is the top ot' the central plug ot' the apparatus, having integral therewith a sei'ew-tlneaded iiange, G. This flange C, in addition to being screw-threaded upon the outside, has au inner female screw-thread, D. A small central scrcwplug, E, projects downward from the top B, and is pierced to receive the stem I, and sets down against the upper side otl the annular tlange I, which is set rigidly upon saidistem.

A tube or box, G, is furnished with an inner iiange, H, and is secured upon the small plug E. The inner ange or shoulder, H, extends around the interior of this box G, closely tit ting the stem E, antl sets up against the lower surface ofthe Bange l. The stern I is turned in operating to open and close my device, and since the ilange I is held down above by the plug E, and is supported beneath by the flange or shoulder H, it will be seen that the tlange 1, and consequently the stem I, is secure againstvertical motion, either u pward or downward.

J is a small box or thimble, fitting by an inner female screw-thread upon the male screwlthread upon the lower end ot' stem I. It-sets up iuto the lower hollow part of tube G, be-

tube and the stein I around the latter.

K is a cap having a lower tiange with a festopper L. The stopper L is provided upon its lower t'ace with a lead packing, M, which sets down upon the upper rim ofthe bottle N and closes the latter.

F is an open support, which screws into the top B by means otl a screw-thread, D, and projects downward to support the bottle N in the manner in common use with the Champion and other {ire-extinguishing apparatus. It is intended to support the bottle against the pressure ofthe stopper M. O is a lea-d packing-ring set around the thimble J upon the top of cap A. The thimble J is guided in its vertical motions in the tube G by means of lugs in the interior of the latter, which tit into grooves in the outer vertical surface ot' said thiuible. (See Fig. 4.)

B R, Figs. 2 and 3, are straps tor carrying the apparatus. When two persons carry the apparatus each one takes hold otl a strap, R, at a point, Q, between two metallic loops, (see the apparatus. Loops Q Q are thus formed by the weight ot' the device, and the latter is carried with ease by two persons. It' it is desired that one person should carry the device, the carrier slips one ot' the stra-ps It Rover each shoulder at about the points I P, and is thus enabled to carry the device.

The operation is as follows: It is supposed that the bottleN is first charged with the chemical from which it is desired to generate the gas in the extinguisher. The stopper Lis then set down Vupon it in the manner shown in Fig. 1, which represents the bottle and apparatus as closed. Now, when it is desired to use the inachine the stem I is turned by means ot' the haudle l, and the screw-thread upon its bottom so revolves as to raise the box J, cap K, and stopper L. This turning of the stem is continued `until the lead packing 0 is jammed up against the lower or bottom face of tube or box G. The machine is then inverted, andthe tween the inner wall of the lower part of said male screw-thread, into which is secured the t Fig. 2,) two of which are set upon each side ofl ICG Araised suticiently to form a close joint.

acid contents of the bottle are allowed to run out and unile with alkaline solution in the body of the extinguisher. V'Vhen the machine vis inverted the acid will low out and around the working parts ot' the device, already described, and if it were not that the entrance tothe. interior ot' said working parts is hermetieally sealed by the packing O jamming up against the envelopingtube G these working parts would he injured or destroyed by the action of the acid, as will be seen by au inspection ot' the drawings, Fig. l. The raising of cap K, stopper L, and packing O would have the effect described. 1t may happen through carelessness that the bottle N may be left slightly open, and yet the packing O not be 1n such case the fumes of the acid are prevented from injuring the stem I and its thread by means of the thimble J, which lits closely in the bottom ot' tube G, thus forming a close joint. (See Figs. l and 4.)

1t will be readily seen that in case excessive care is presumed it will not be necessary to protect the lower end of the stem and screwthread from the fumes arising from the acid, as such presumption will suppose the stopper to be always well closed down upon the upper rim ot' the bottle. Therefore the box J might be dispensed with and the screwthread of the stem be made to engage with a fixed part of the device in the interior ot' the box or tube Gr. The lower part ot' the stem in such case could, through the skill of any ordinary mechanic, be attached directl y to the stopper ot' the bottle. 'l'he stein in such event, instead of being devoid ot vertical niotion, as in the device described by me, would require to have vertical motion upward or downward, in order to allow its thread to operate and to raise and lower the stopper ofthe bottle. In the event ofthe bottle beingalways carefully closed, as above presumed, it would only be necessary to create a joint between'the top of the stopper' and the lower rim ot' the tube or box Gr to save the inner mechanism ot' the stem against damage by the acid before the apparatus was upset. Of course between the opening of the bottle in such case andthe closing of the joint between the top of the stopper and the bottom of the tube G there would be some escape ot' the fumes of the acid; but the time for it to operate would be so slight that the damage resulting to the inner working parts ofthe opening mechanism would be infinitesimal.

The device which I have described roughly in the paragraph ot' my specitcation immedi' ately preceding this I purpose to cover in an other and subsequent application for a patent.

rlhe lead packing 0, l simply use as an adjunct to form a packing-joint with the bottom of tube G; but, as will be plainly seen, a true joint may be formed as well between the ground upper surface ot' cap K and the lower edge or surface of the tube G, space ofcourse being allowed between the top of box J and the lower surfaces of shoulders H to permit cap K and tube G being brought into contact when the stopper L is raised and the apparatus fully opened,so that I shall omit in my claims to invention the lead packing 0. I shall also speak in my claims of the stopper L, which comes iu direct contact with the top of the bottle, and the cap K as forming one part-namely, the cover K L.

1.. In a lire-extinguishing device, the combination of top B, stem I, box or tube Gr, partially surrounding said stein, thimble or box J, enveloping the thread and lower part ofsaid stem, stopper L, with suitablemeans ofattaching the stem Ito said stopper,and the bottleN to contain the acid, whereby the stem is protected from injury from acid lumes it' the stopper is partially opened, and a tight joint is eii'ected between the top ot' bottle-cover K L when the apparatus is wholly opened, substantially as described.

2. In a tire-extinguishing device, the combination ot' top B, screw-threaded stem I, box or tube G, partially enveloping said stem, box J, closely enveloping the lower part of said stem and secured to the bottle-cover K L, and the bottle N, whereby the stem, with its work ing parts, is protected from the fumes of the acid contained in the bottle or from the acid itself, substantially as described.

3. In a tire-extinguishing device, the combination of top B, screwthreaded stem I, box or tube G, partially enveloping said stem, box J, closely enveloping the lower part of said stem, with the bottle-cover K L, covering the bottle, and the bottle N, substantially as de scribed.

Witnesses: WILLIAM K. PLATT.

WM. II. CARSON, J oHN ROBERTS.

IOO 

